/* Bussmann Distributor Website - Main Styles */
/* Based on UX/UI Design Guidelines */

/* CSS Reset/Normalize */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Variables for color palette */
:root {
  --primary-blue: #0072CE;
  --secondary-black: #000000;
  --accent-yellow: #FFD700;
  --neutral-gray: #F5F5F5;
  --dark-gray: #333333;
  --success-green: #4CAF50;
  --error-red: #F44336;
  --white: #FFFFFF;
  
  /* Typography */
  --font-primary: 'Roboto', Arial, sans-serif;
  --font-secondary: 'Open Sans', Arial, sans-serif;
  --font-mono: 'Courier New', monospace;
  
  /* Spacing */
  --base-unit: 8px;
  --spacing-xs: calc(var(--base-unit) * 1); /* 8px */
  --spacing-sm: calc(var(--base-unit) * 2); /* 16px */
  --spacing-md: calc(var(--base-unit) * 3); /* 24px */
  --spacing-lg: calc(var(--base-unit) * 4); /* 32px */
  --spacing-xl: calc(var(--base-unit) * 5); /* 40px */
  --spacing-xxl: calc(var(--base-unit) * 6); /* 48px */
  
  /* Breakpoints */
  --mobile-max: 767px;
  --tablet-min: 768px;
  --tablet-max: 1023px;
  --desktop-min: 1024px;
}

/* Typography Styles */
body {
  font-family: var(--font-secondary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
}

h1 {
  font-family: var(--font-primary);
  font-size: 32px;
  font-weight: bold;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-family: var(--font-primary);
  font-size: 24px;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
}

h3 {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--primary-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout Styles */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

/* Header Styles */
header {
  background-color: var(--white);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
  display: flex;
  align-items: center;
}

.logo h1 {
  font-size: 24px;
  margin: 0;
  color: var(--primary-blue);
}

.logo span {
  font-size: 14px;
  color: var(--dark-gray);
  display: block;
}

/* Navigation Styles */
nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: var(--spacing-lg);
}

nav ul li a {
  color: var(--dark-gray);
  font-weight: 500;
  position: relative;
}

nav ul li a:hover {
  color: var(--primary-blue);
}

nav ul li a.active {
  color: var(--primary-blue);
}

nav ul li a.active:after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-blue);
}

/* Mobile menu */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--dark-gray);
  margin: 3px 0;
  transition: 0.3s;
}

/* Hero Banner Styles */
.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../images/hero-background.svg') center/cover no-repeat;
  height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  margin-bottom: var(--spacing-xl);
}

.hero-content h2 {
  font-size: 36px;
  margin-bottom: var(--spacing-md);
  max-width: 800px;
}

.hero-content p {
  font-size: 18px;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-family: var(--font-primary);
}

.btn-primary {
  background-color: var(--accent-yellow);
  color: var(--dark-gray);
}

.btn-primary:hover {
  background-color: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn-secondary {
  background-color: transparent;
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
}

.btn-secondary:hover {
  background-color: var(--primary-blue);
  color: var(--white);
}

/* Core Advantages Section */
.core-advantages {
  padding: var(--spacing-xl) 0;
  background-color: var(--neutral-gray);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.advantage-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-5px);
}

.advantage-card i {
  font-size: 48px;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-md);
}

.advantage-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* Product Areas Section */
.product-areas {
  padding: var(--spacing-xl) 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.product-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.product-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.product-card-content {
  padding: var(--spacing-md);
}

.product-card h3 {
  margin-bottom: var(--spacing-sm);
}

/* Solutions Overview */
.solutions-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--neutral-gray);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* News Section */
.news-section {
  padding: var(--spacing-xl) 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.news-card {
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
}

.news-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.news-content {
  padding: var(--spacing-md);
}

/* Footer Styles */
footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
  color: var(--accent-yellow);
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
  color: var(--white);
}

.footer-column ul li a:hover {
  color: var(--accent-yellow);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid #555;
  font-size: 14px;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: bold;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: var(--font-secondary);
  font-size: 16px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 2px rgba(0, 114, 206, 0.2);
}

/* Table Styles for Product Specifications */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.data-table th {
  background-color: var(--primary-blue);
  color: var(--white);
  font-weight: bold;
}

.data-table tr:nth-child(even) {
  background-color: #f9f9f9;
}

.data-table tr:hover {
  background-color: #f0f8ff;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-container {
    flex-wrap: wrap;
  }
  
  nav {
    display: none;
    width: 100%;
    margin-top: var(--spacing-md);
  }
  
  nav.active {
    display: block;
  }
  
  nav ul {
    flex-direction: column;
  }
  
  nav ul li {
    margin: 10px 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-content h2 {
    font-size: 28px;
  }
  
  .hero-content p {
    font-size: 16px;
  }
  
  h1 {
    font-size: 28px;
  }
  
  h2 {
    font-size: 22px;
  }
  
  h3 {
    font-size: 18px;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.mt-4 {
  margin-top: var(--spacing-xl);
}

.mb-4 {
  margin-bottom: var(--spacing-xl);
}

/* Breadcrumb Styles */
.breadcrumb {
  padding: var(--spacing-sm) 0;
  font-size: 14px;
  color: var(--dark-gray);
}

.breadcrumb a {
  color: var(--primary-blue);
}

.breadcrumb span {
  margin: 0 var(--spacing-xs);
}

/* Product Filter Styles */
.filters {
  background: var(--neutral-gray);
  padding: var(--spacing-md);
  border-radius: 8px;
  margin-bottom: var(--spacing-lg);
}

.filter-group {
  margin-bottom: var(--spacing-md);
}

.filter-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: bold;
}

.filter-group input,
.filter-group select {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
}